Patent US4094075A successfully refreshed from Google Patents.
US4094075A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Systems for drying particulate material
Assignee: Individual
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Filing: 1977-03-21
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Granted: 1978-06-13
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Expires: 1997-03-21
Abstract
Abstract Systems for drying moisture entrained particulate material include a pressurizable chamber for receiving the material to be dried, and a fluid bed device disposed within the chamber for moving the material from an inlet through the chamber to an outlet. A heat exchanger heats the material to be dried flowing into the chamber. Compressing apparatus in the form of a blower pump draws air from the chamber to remove moisture from the material and for compressing the moisture entrained air for heating it. The heated moisture entrained air is guided from the compressing device to the heat exchanger for supplying heat to it. In one form of the invention, a second heat exchanger disposed near the oulet of the chamber cools the material prior to its leaving the chamber for retaining heat within the system. The air flowing from the second heat exchanger is heated by conduction from the blower pump prior to entering the pressurizable chamber for an even more efficient operation of the system.
Inventors
- 👤 Peter M. Caruso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:49
CPC Classifications
F; F26; F26B; F26B23/00; F26B23/001; F26B23/007; F26B23/10; F26B3/00; F26B3/02; F26B3/06; Y; Y02; Y02P; Y02P70/00; Y02P70/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
141 words
A system for drying moisture-entrained particulate material, comprising: means defining a pressurizable chamber for receiving the material to be dried, said chamber having an inlet and an outlet; inlet means for enabling the material to be dried to flow into said chamber via said inlet; outlet means for enabling the dryed material to flow out of said chamber via said outlet; fluid means disposed within said chamber for dispersing the material within said chamber between said inlet and said outlet; heat exchanging means for heating the material to be dried flowing into said chamber; compressing means for drawing air through said chamber to remove moisture from the material and for compressing the moisture-entrained air for heating it; and means for guiding the flow of heated moisture-entrained air from said compressing means to said heat exchanging means to supply heat to it.
Claim 2
Independent Claim
141 words
A system for drying moisture-entrained particulate material, comprising: means defining a pressurizable chamber for receiving the material to be dried, said chamber having an inlet and an outlet; inlet means for enabling the material to be dried to flow into said chamber via said inlet; outlet means for enabling the dryed material to flow out of said chamber via said outlet; fluid means disposed within said chamber for dispersing the material within said chamber between said inlet and said outlet; heat exchanging means for heating the material to be dried flowing into said chamber; compressing means for drawing air through said chamber to remove moisture from the material and for compressing the moisture-entrained air for heating it; and means for guiding the flow of heated moisture-entrained air from said compressing means to said heat exchanging means to supply heat to it.
Claim 3
Dependent Claim
61 words
A system according to claim 1, wherein said inlet means includes an inlet rotary air lock for permitting the material to be dried to enter said chamber and for enabling said chamber to remain pressurized, said outlet means including an outlet rotary air lock for permitting the dried material to exit said chamber and for enabling said chamber to be pressurized.
Claim 4
Dependent Claim
45 words
A system according to claim 1, wherein said fluid means includes a fluid bed disposed within said chamber and inclined from said inlet to said outlet, said fluid bed being means defining a plurality of predetermined dimensioned vent openings permitting air to enter said chamber.
Claim 5
Dependent Claim
55 words
A system according to claim 1, wherein said heat exchanging means includes at least one set of coils disposed in said inlet communicating with said chamber, said coil having one of its ends coupled in fluid communication with the outlet of said compressing means and having its other end coupled in fluid with the atmosphere.
Claim 6
Dependent Claim
34 words
A system according to claim 4, wherein said heat exchanging means further includes a plurality of other heat conducting coils, said coils being disposed in a vertically spaced-apart manner and interconnected in fluid communication.
Claim 7
Dependent Claim
66 words
A system according to claim 5, wherein each one of said coils is in the form of a series of reversely bent tubing sections arranged in a common plane, the planes of said coils being disposed in a parallel spaced apart vertical manner, said sections extending in a longitudinal direction within its plane, adjacent longitudinal directions of said planes being angularly disposed relative to one another.
Claim 8
Dependent Claim
38 words
A system according to claim 4, wherein said compressing means includes valve means coupling said other one of said ends of said coils to the atmosphere for controlling the back pressure of the fluid flowing through said coil.
Claim 9
Dependent Claim
14 words
A system according to claim 1, wherein said compressing means includes a blower pump.
Claim 10
Dependent Claim
36 words
A system according to claim 1, further including a second heat exchanging means for cooling the material entering said outlet, expansion means for cooling air being drawn into said second heat exchanger by said compressing means.
Claim 11
Dependent Claim
53 words
A system according to claim 9, further including a second chamber confining said compressing means, means for conveying warm air from said second heat exchanging means to enable said warm air to be heated still further by conduction from said compressing means disposed within said second chamber prior to entering the first-mentioned chamber.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-06-12 | 1981-12-12 | 1982-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-06-12 | 1985-12-12 | 1986-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-06-12 | 1989-12-12 | 1990-06-13 | $7700.00 | Window Closed / Lapsed |